Jacksonville weather in August

In August, Jacksonville sees average daytime highs of 90°F and overnight lows near 73°F, with 2.8 in of rain across 8.4 wet days and about 13.3 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 90°F through the month. The sky is clear or mostly clear about 48% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Jacksonville's 3rd-clearest and 12th-windiest month. For the whole year in context, see Jacksonville's year-round climate.

Daytime high
90°
2nd warmest
Overnight low
73°
11th coldest
Rainfall
2.8 in
8.4 wet days
Daylight
13 h 18 min
5:33 AM – 6:52 PM
Cloud cover
47%
3rd clearest
Wind
5 mph
12th windiest
Solar energy
5.98 kWh/m²
Travel score
4.1
out of 10

Jacksonville is city in Pulaski County, Arkansas, United States.

Density
380/km²
people per km²
Founded
1870

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 90°F through the month.

A typical August day in Jacksonville reaches about 90°F in the afternoon and slips back to 73°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 83°F and 97°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

60°70°80°90°100°151015202531
Avg high (°F)Avg low (°F)
19174
29174
39174
49174
59174
69174
79174
89174
99174
109074
119073
129073
139073
149073
159073
169073
179073
189073
199073
209073
219073
229072
239072
249072
259072
268972
278972
288972
298971
308971
318971

How August really feels in Jacksonville

Once humidity and wind are folded in, August averages 31 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
31
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Jacksonville weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan51° / 34°3.68.90.89.92.5
Feb55° / 37°3.99.30.810.73.5
Mar64° / 45°4.911.20.311.75.5
Apr73° / 54°5.310012.96.7
May80° / 63°5.412013.86.2
Jun88° / 71°3.19.4014.34.6
Jul91° / 74°3.49.8014.13.8
Aug90° / 73°2.88.4013.34.1
Sep84° / 66°3.46.7012.26.2
Oct74° / 54°3.97.6011.17.4
Nov62° / 44°4.28.4010.25.6
Dec53° / 37°4.99.20.39.73.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26337
36337
46337
56238
66238
76238
86238
96238
106337
116337
126337
136337
146337
156436
166436
176634
186634
196733
206733
216733
226733
236733
246634
256634
266634
276733
286733
296733
306634
316733

Chance of precipitation in August

Any precipitation

Jacksonville gets around 2.8 in of rain over 8.4 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
229
329
429
529
629
729
829
930
1030
1130
1230
1330
1429
1529
1629
1728
1828
1927
2027
2126
2226
2326
2426
2526
2626
2726
2825
2925
3025
3125

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
102927548
202928538
302929528
402929528
502929528
602930518
7021029518
8131029498
9131029498
10141128488
11141128488
12141227488
13141227478
14141327478
15151326478
16151426478
17151427467
18151427467
19151527466
20151528475
21151528475
22151528465
23141529474
24141529464
25141530464
26141630463
27251630453
28251729443
29251729442
30351829432
31361928422

Wind in August

Winds average 5 mph in August, the calmest month.

Across August, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 min at the start of August to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over August. Sunrise moves from 5:21 AM to 5:44 AM, and sunset from 7:08 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:217:08
213.75:227:07
313.75:237:06
413.75:247:05
513.75:247:04
613.65:257:03
713.65:267:02
813.65:277:01
913.55:287:00
1013.55:286:59
1113.55:296:58
1213.45:306:57
1313.45:316:56
1413.45:316:54
1513.45:326:53
1613.35:336:52
1713.35:346:51
1813.35:346:50
1913.25:356:48
2013.25:366:47
2113.25:376:46
2213.15:386:45
2313.15:386:43
2413.15:396:42
2513.05:406:41
2613.05:416:39
2712.95:416:38
2812.95:426:37
2912.95:436:35
3012.85:446:34
3112.85:446:33

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.98 kWh/m².

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 6.49 kWh/m² in June across the year — August's 5.98 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.0Intense
126.0Intense
136.0Intense
146.0Intense
156.0Bright
166.0Bright
176.0Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.7Bright
275.7Bright
285.7Bright
295.6Bright
305.6Bright
315.5Bright
Planning a trip in August

Is August a good time to visit Jacksonville?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.1
Sightseeing
8th-best month of the year
6.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Jacksonville for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Jacksonville in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Jacksonville sees daytime highs around 90°F and nights near 73°F. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Jacksonville in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jacksonville peaks around June 20 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 20UV 10Dec 21UV 2
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Jacksonville in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Jacksonville is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Jan 17 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar11Good
Apr11Good
May15Moderate
Jun19Moderate
Jul21Moderate
Aug18Moderate
Sep16Moderate
Oct11Good
Nov8Good
Dec7Good
Location & terrain

Where is Jacksonville?

Jacksonville sits at 34.9°N, 92.1°W, 285 ft above sea level, in United States. The nearest listed city is Sherwood, 7.5 mi away.

Topography around Jacksonville

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jacksonville.

Within 2 miles, the terrain around Jacksonville has only modest variations in elevation — a maximum elevation change of 174 ft around an average of 285 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 413 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,585 ft.

The land around Jacksonville is covered by trees (60%) and artificial surfaces (20%) within 2 miles, trees (59%) and grassland (22%) within 10 miles, and trees (58%) and cropland (20%) within 50 miles.

2 miles
174 ft
10 miles
413 ft
50 miles
1,585 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Sherwood 7.5 mi · Cabot 9.3 mi · North Little Rock 11 mi · Little Rock 13 mi · Maumelle 17 mi · Conway 24 mi · Bryant 29 mi · Searcy 34 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jacksonville (34.8662°, -92.1102°, elevation 285 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).